Hand-winding Spring Drive 38.5mm

How it wears

Wears smaller than its 38.5 mm case suggests

Grand Seiko Hand-winding Spring Drive 38.5mm measures 43.7 mm lug-to-lug on a 38.5 mm case, a lug-to-lug ratio of 1.14 against a database median of 1.18. That span is shorter than 81% of the 7,421 watches in this database and shorter than 82% of the 202 Grand Seiko watches listed.

A flat wrist width of 49 mm (1.93 in) or more keeps it in the balanced range, and from 59 mm (2.32 in) it starts to look compact. Below 43.7 mm (1.72 in) the lugs are likely to overhang the wrist. Flat wrist width is measured straight across the top of the wrist, not around it.

At 10.2 mm thick it is on the slim side, thinner than 83% of the watches with a listed thickness.